US PATENT SUBCLASS 271 / 154
.~.~.~.~ Sensor activates electric or fluidic circuit

Current as of: June, 1999
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271 /   HD   SHEET FEEDING OR DELIVERING

8.1  DF  FEEDING {8}
145  DF  .~ Pack holders {7}
147  DF  .~.~ Advancer {5}
152  DF  .~.~.~ Control of advancer responsive to sensing of foremost sheet {3}
154.~.~.~.~ Sensor activates electric or fluidic circuit {1}
155  DF  .~.~.~.~.~> Controlled electric or fluidic motor actuates advancer

DEFINITION

Classification: 271/154

(under subclass 152) Device wherein the detecting means is included in a system of wiring or tubing that carries a flow of electricity or fluid respectively, and wherein said detecting means regulates said flow to activate or deactivate the urging means.

(1) Note. Among the sensers found in devices of this subclass are: magnets, photoelectric cells (for which, per se see search notes below), fluidic devices (for which, per se, see search notes below), and valve operators.

SEE OR SEARCH CLASS

137, Fluid Handling,

803+, for fluidic devices, per se, and see (1) Note above.

250, Radiant Energy,

216+, for photoelectric cells, per se, and see (1) Note above.